Improvement in stove-pipe thimbles



I nQsuuTH. I V Stove-Pipe Thimbles. No. 140,553, Patenledjulyhl873.

GK v a AM PHOTO'ZITHOGRAPHIC an. N. flusaamvsls mums.

UNITED STATES PATENT OE-EIoE.

HENRY SMITH, OF SOUTHINGTON, CONNECTICUT, ASSIGNOR TO HIMSELF AND PECK, STOW & VVILCOX COMPANY, OF SAME PLACE.

IMPROVEMENT IN STOVE-PIPE THIMBLES.

Specification forming part of Letters Patent No. 140,553, dated July 1, 1873 application filed February 14, 1873.

To all whom it may concern:

Be it known that I, HENRY SMITH, of Southington, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Stove-Pipe Thimbles, of which the following is a specification:

My invention consists in the employment of a corrugated stove-pipe thimble, whereby portions of the thimble, throughout its length, bear against the pipe and support it, while other portions of the same wall of the thimble are remote from the pipe, so that air-passages are formed outside of the pipe and inside of the thimble, as hereinafter described. Also, in the combination of the foregoing with a register, and in making the body of the thimble in two longitudinal halves, so that one will nest into the other for packing, as hereafter described.

In the accompanying drawing, Figure 1 is a front elevation of a stove-pipe thimble which embodies my invention. Fig. 2 is a front elevation of a detached portion thereof. Fig. 3 is a side elevation of said thimble, and Fig. 4 is a rear elevation, showing the end of the two halves as nested together for packing.

A designates the thimble proper, which is formed of a single thickness, preferably of cast metal, and is provided with corrugations a aa at, either sharp or round cornered, or both, as clearly shown in Fig. 2, and indicated by broken lines in Fig. 1, the broken lines in Fig. 2 indicating the position of the stovepipe. The object of the corrugations a a a a is to form air-passages upon the inside of the thimble A and outside of the stove-pipe, when the inward-projecting portions of the corrugations will support and hold the pipe properly throughout the whole length of the thimble, and thereby only a single wall in the thimble is necessary in order to have it perform both of the aforesaid offices.

At the front end of I the thimble A I form an enlargement or head, B. In front of the head B I secure aplate, C, provided with a register, b, which may be operated by aid of the cords or chains 0 0. Thus the passage or draft of air through the corrugations of the thimble A may be regulated by means of the register.

I construct the thimble A in two longitudinal halves, d d, with the edges so formed as to shut into each other, as shown in Fig. 2. Thus the two halves, when taken apart, may be nested together, as'shown in Fig. 4, so that they may be packed into less space for trans portation than they could be if formed in one piece.

In order to put the parts together for use it is only necessary to shut the edges of the two halves d d together and secure said halves to the register-plate C by screws 0 0, Fig. 3, or by means of suitable lugs formed upon the parts.

It is of course evident that the first part of my invention may be used without the part last above described.

I am aware that registers and air-passages have been before used in connection with stove-pipe thimbles. I

I claim as my invention 1. The thimble A, corrugated as described, whereby a single wall performs a double oflice, substantially as specified.

2. And in combination with the subjectmatter of claim 1, the register 0 b, substantially as, and for the purpose described.

3. The longitudinal halves d d of the thimble A, when arranged so as to be detached and nested together for packing, substantially as described.

. HENRY SMITH. Witnesses:

R. 'A. NEAL, M. W. BEEKLEY. 

